I think , if you read thre blog again, you will see that it is really for your own protection. It is not merely checking if your copy is legit, it is, quote,
"Once installed, the Update protects customers by identifying known activation exploits that may affect their PC experience. If any activation exploits are found, Windows will alert the customer and offer options for resolving the issue – in many cases,"
I regard it as a free security service. If you have doubts about its activities then, in answer also to Cattileys question, Sorry but to quote again:
"I’d like to stress that the Update is voluntary, which means that you can choose not to install it when you see it appear on Windows Update. I also want to stress that installing this update will not jeopardize your privacy; although the update contacts Microsoft’s servers to check for new threats as I outline below, the information we receive from PCs during these checks does not include any personally identifiable information or any other information that Microsoft can use to identify or contact you. This update follows the same stringent and secure set of privacy principles and policies as other downloads. The update can also be uninstalled at any time."
I do not see it as any interest for users running pirated copies, neither is it intended for their assistance.
Do you see legit users as being troubled, when the update is offered?